That’s such a dumb take. Fruits are like the second best thing after vegetables in their ration of satiation per calorie.
Added sugar is completely different beast from the sugar in fruits and vegetables.
You would need to eat an ungodly amount of fruits for it to be bad for your health.
You are fighting millions of years of evolution. If you are in caloric deficit for too long, your body thinks you don’t have food near you anymore and try to conserve whatever energy you have.
Take a diet break and up your calories slightly daily until you see yourself gaining a little bit of weight. Then cut back the last increase.
Keep that calorie intake for a few weeks and then start a new cut after that. Rinse and repeat until you are at your goal weight.
Ab easy rule of thumb is to do a weight cut for 6-12 weeks, and then do a maintenance weight for the same length of time you did your cut.